EN/LZT 720 0327/3 Uen R1A RBS 2308 Micro RBS Product Description The RBS 2308, a member of the RBS 2000 family, is a 4 TRX radio base station for indoor or outdoor use.
Micro RBS RBS 2308 Contents 2 (30) 1 Product Overview 3 1.1 Main Features 3 1.2 Variants 3 1.3 Optional Equipment 4 2 Dimensions 5 3 Space Requirements 7 4 Environment 8 4.1 Operating Environment 8 4.2 Environmental Impact 9 4.3 Materials 9 5 Hardware Units 10 5.1 Standard Hardware Units 10 5.2 Optional Hardware Units 12 6 Interfaces 13 6.1 External Connections 13 6.2 Internal Interface 19 6.3 OMT Interface 20 6.
RBS 2308 1 Micro RBS Product Overview The RBS 2308 is an outdoor micro base station. It can be used for indoor or outdoor applications, with four transceivers (TRX). The cabinet can be mounted on walls, poles or masts. The RBS 2308 is designed for use with BSS R9.1C or later. It supports GPRS (CS-1, CS-2, CS-3, and CS-4), HSCSD, and EGPRS in the Micro concept. Main applications of the RBS 2308 are: 1.
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RBS 2308 2 Micro RBS Dimensions This section describes the RBS 2308 dimensions, space requirements and colour. Size and Weight The dimensions of the basic RBS 2308 cabinet (without options) are shown in the figure and table below. 610 430 220 Unit of measurement: mm Figure 1 P010098B RBS 2308 dimensions Use of the fan will increase the height of the cabinet, see table below.
Micro RBS RBS 2308 Table 2 Weights of RBS 2308 and major units Unit Weight IXU 9.5 kg MBU 6.5 kg RRU 23.5 kg Sunshield 1.5 kg Total 41 kg Colour The RBS 2308 is available in grey (reference number NCS S2502–R).
RBS 2308 3 Micro RBS Space Requirements For installation and maintenance, and proper cooling during operation, the space in front of the cabinet must be kept clear for a distance of 500 mm, and there must be at least 250 mm of free space on either side. 300 mm free space is required above the cabinet. The distance between the cabinet and the nearest obstruction below (floor, filing cabinet, another RBS, and so on) must be at least 500 mm. No free space is needed at the back of the cabinet.
Micro RBS 4 RBS 2308 Environment This section provides an overview of the operating environment, environmental impact, and materials used in the RBS 2308. 4.1 Operating Environment The operational temperature limits of the RBS 2308 depend upon the power supply and whether or not the fan is used, see tables below.
RBS 2308 4.2 Micro RBS Environmental Impact This section describes the effects that the cabinet has on the environment. Heat Dissipation Average heat loads of the RBS 2308 are given in the table below. The exact figures are dependent upon configuration, equipment and site-specific conditions. Table 6 Average heat load Operation Condition Average Heat Load Without heating 315 W Acoustic Dispersion The RBS 2308 cabinet does not contribute to the acoustic noise of its surroundings.
Micro RBS 5 RBS 2308 Hardware Units A high level of availability is achieved using strict functional modularity in a system of standardised Replaceable Units (RUs). A faulty RU can easily be replaced by a new one. Fan Cover Screw plugs Sunshield Fan RRU Flash Card Sunshield MBU TIM IXU (RBS 2308 Master) RXBP MCB P010530A Figure 3 5.1 RBS 2308 overview Standard Hardware Units This section briefly describes the standard hardware units required for operation.
RBS 2308 Micro RBS IXU — Interface and Switching Unit The IXU is in the central control unit for one RBS. All switching of traffic is performed in the IXU. The IXU has integrated power supply and climate control. The Flash Memory Card, the TIM, and all external interfaces except AC/DC power, antennas and the fan unit are located on the IXU. Number of units: 1 MBU — Mounting Base Unit The MBU is the mechanical mounting interface for the RBS 2308.
Micro RBS 5.2 RBS 2308 Optional Hardware Units This section describes the RBS 2308 optional hardware units. Fan Unit The fan unit provides addtional cooling to the RBS 2308. It is located on top of the RBS, on the RRU. The fan is controlled by the RRU and receives power from it. Number of units: 0 – 1 per RRU MCB – Multicasting Box The multicasting box provides a single feeder interface for an external antenna/antenna system.
RBS 2308 6 Micro RBS Interfaces In this section, all external and internal connections are listed, as well as the test interface and the operator interface. Most external connectors enter the cabinet through the bottom of the cabinet. The earthing connection is located on the top of the MBU. Test and operator interfaces are located on cabinet hardware units. . Antennas External Internal Fan Unit RRU Y link IXU MBU . Power supply . Ext. alarms . GPS/LMU . OMT . DC for MINI-LINK or LMU . TXL bus .
Micro RBS RBS 2308 • OMT interface • GPS/LMU signalling interface • DC for MINI-LINK or LMU Antenna Connections In GSM 1900, antenna connections are made at the RRU and the MCB. This section describes the antenna connectors located on the RRU and the MCB. Note: In GSM 800, depending upon configuration, antenna connections are also made at the RXBP, see Page 15.
RBS 2308 Micro RBS TX(/RX ) ANT 1 TX(/RX ) ANT 2 LOAD MCB 800 900 P010139A Figure 6 Table 9 MCB antenna connection ports Antenna connections ports on the MCB Connector Type of Connector TX(/RX) top N connector (male) TX(/RX) side N connector (female) Load N connector (female) Ant 1 N connector (female) Ant 2 N connector (female) RXBP Antenna Connections (800 MHz only) This section is valid for GSM 800 only. For certain configurations, antenna connections are made at the optional RXBP.
Micro RBS RBS 2308 Table 10 Antenna connections ports on the RXBP Connector Type of connector RX2 N connector (female) RXBP2 TNC (female) RX1 N connector (female) RXBP1 TNC (female) Transmission The RBS 2308 has four transmission ports, located in the IXU, see figure below. TIM 4 Transmission ports PORT A PORT C PORT B PORT D P010599A Figure 8 Location of T1 transmission ports in IXU For connection parameters, see the table below.
RBS 2308 Micro RBS External Alarms The RBS 2308 is equipped with four external alarms, located in the IXU, see figure below. For external alarm parameters, see Table 12 on page 17. External alarms P010597A Figure 9 Location of external alarms in IXU Table 12 External alarm connection parameters Type of connector Terminals for 8 x 2.
Micro RBS RBS 2308 MINI-LINK or LMU Power Supply The RBS 2308 can supply DC power to a MINI-LINK E Micro or to an LMU. This interface is located on the IXU, see figure below. DC to MINI-LINK or LMU P010596A Figure 10 Location of MINI-LINK / LMU power supply in IXU Parameters for the MINI-LINK / LMU power supply are given in the table below. Table 13 Type of connector Terminals for 2 x 2.
RBS 2308 Micro RBS Other External Connections Table 14 Other external connections Connection Location Connection to Type of Connector MBU AC Mains connections Screw terminal for 3 x 5.26 mm2 (maximum) conductors; cable gland capacity 14 mm diameter DC supply connections Screw terminal for 3 x 5.26 mm2 (maximum) conductors; cable gland capacity 14 mm diameter GPS/LMU (synchronisation or positioning) 15 pin D-sub HD, female; see Figure 11 on page 19. IXU GPS/LMU P010598A Figure 11 6.
Micro RBS 6.3 RBS 2308 OMT Interface The OMT interface for RBS 2308 is located on the right side of the IXU. It is a 9–pin D-sub (female) connector. 6.4 Operator interface The Man-Machine Interface (MMI) in the RBS 2308 is comprised of indicators and buttons located on the hardware units in the cabinet. RRU The table below describes buttons found on the RRU. Table 16 RRU buttons Button Description RRU Reset Resets the RRU. Local/Remote Changes mode between local and remote.
RBS 2308 Micro RBS RRU-M EDGE RRU Reset Fault Operational Local RF off Local/Remote AC power on DC power on RRU temp. P010111A Figure 12 RRU interface panel IXU The table below describes buttons found on the IXU. Table 18 IXU buttons Button Description IXU Reset Resets the IXU and all subunits. Local/Remote Changes mode between local and remote. The table below describes the IXU indicators, and their meaning when the indicator is on.
Micro RBS RBS 2308 Table 19 22 (30) IXU indicators Indicator Colour Description Fault Red Fault detected on the IXU. Operational Green IXU is operational. Local Yellow IXU is in local mode. RBS fault Yellow RBS fault detected. External alarm Yellow One or several external alarms active in the RBS. EOM bus fault Yellow (Not used.) AC power on Green AC power supply within operational range. DC power on Green DC power supply within operational range. IXU temp.
RBS 2308 Micro RBS IXU-21 IXU Reset Fault Operational Local RBS fault Ext. alarm EOM bus fault Local/Remote AC power on DC power on IXU temp. Transmission OK Port A Port C Port B Port D P010600A Figure 13 IXU interface panel MBU The table below describes switches found on the MBU.
Micro RBS 7 RBS 2308 Power System This section provides information on the power system of the RBS 2308. The main characteristics of the RBS 2308 power supply are: 7.1 • Either alternating current (AC) or direct current (DC), –48 V DC, may be used • AC Mains voltage range 100 – 127 V AC • External Power and Battery Cabinet (PBC) may be used Power Supply The RBS may be operated on AC or DC power. AC Mains Supply Voltage Single-phase AC is used, voltage range 100 – 127 V AC.
RBS 2308 Micro RBS DC Power Supply The RBS 2308 can be operated on -48 V DC (-40.5 to -57.0 V DC) supply. The following fuses are recommended for DC power supply. Table 23 DC supply fuses recommendation Cabinet Orientation Recommended Fuse Rating, DC Supply Vertical 20 A Horizontal (1) 25 A (1) Horizontal mounting requires forced air flow over the RBSs cooling fins. 7.2 Battery Back-up The RBS 2308 supports an external Power and Battey Cabinet (PBC).
Micro RBS RBS 2308 Table 25 Power consumption, basic cabinet Operational condition Power consumption, AC supply Power consumption, DC supply Normal operation (no heating) 360 VA 320 VA Start-up of heating 3200 VA n/a Continual heating 1000 VA n/a (1) (1) Heater is fed by AC power. No heating with DC power supply. Power can also be supplied by the RBS 2308 to various external equipment, for example an LMU.
RBS 2308 8 Micro RBS Transmission The RBS 2308 supports the T1 transmission standard. Characteristics of the T1 standard are: • 1.5 Mbit • 100 • B8ZS line code Multidrop Up to ten RBSs can be cascaded using multidrop. RBS 2308 is equipped with multidrop bypass relays. RBSs connected downstream to a faulty RBS 2308 will therefore still receive transmission. 9 External Alarms The RBS 2308 supports a maximum of 4 external alarms, located on the IXU.
Micro RBS 10 RBS 2308 Standards, Regulations and Dependability In this section a brief overview of standards, type approval and electromagnetic compatibility are stated. 10.1 Safety Standards In accordance to the market requirements, the RBS 2308 complies with the following product safety standards: 10.2 • 73/23/EEC Low voltage directive • IP 55 according to IEC 60529 • EN 60950 / IEC 60950 • EN 60215 / IEC 60215 • UL 1950, harmonised with CSA 22.2 No.
RBS 2308 11 Micro RBS Vandal Resistance The RBS 2308 fulfils Ericsson’s requirements for vandal resistance.
Micro RBS Ericsson AB SE-164 80 Stockholm Sweden implementation.GSMsupport@era.ericsson.se 30 (30) RBS 2308 The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. Ericsson shall have no liability for any error or damages of any kind resulting from the use of this document.
